Fourdrinier machine.



PATENTED FEB. 26, 1907.

W. EIBEL. FOURDRINIER MACHINE.

APPLICATION FILED AUG.22. 1906.

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WILLIAM EIBEL, OF RHINELANDER, WISCONSIN, ASSIGNOR, BY DIRECT AND MESNE,ASSIGNMENTS, TO EIBEL PROCESS COMPANY, OF PORT- LAND, MAINE, A CORPORATION OF MAINE.-

FOURDRENEER' MACHlNE.

Specification of Letters Patent.

.- Patented Feb. 26, 1907.

To (all whom it may concern.-

Be it known that I, WILLIAM EIBEL, of Rhinelander, .county of Oneida, State of Wisconsin, have invented an improvement, in Fourdrinier Machines, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to Fourdrinier machines, and has for its object to construct and arrange the machine whereby it may be run at a very much higher speed than heretofore and produce a more uniform sheet of paper which is strong, even, and well formed.

My invention is embodied, essentially, in the lirst part or element of the machine having the F ourdrinier wire or paper-making wire, and consists in causing the stock to travel by gravity in the direction of movement of the making-wire and approximately as fast as the making-wire moves, thereby resulting in a gravity-feed for the machine. The stock may be and preferably is caused to travel more rapidly than the normal or usual speed of the making-wire for a certain grade of stock, and means are provided for increasing the speed of the machine so as to cause the making-wire'to move at a higher rate ofspeed than usual, being substantially equal to the speed of the rapidly-moving stock; To accomplish this result in a simple manner, the breast-roll end of the papermaking Wire is maintained at a substantial elevation above the level, thereby providing a continuous downwardly-moving papermaking wire, and the declination thus given to the wire is such that the stock is caused to travel by gravity in the direction of the movement of the wire and substantially as fast'fa's the wire moves. The declination of the paper-making wire may be adjustable or the speed of the wire may be variable, or.

both the declination and speed of the wire may be adjustable, in order that the velocity produced by gravity in the stock on the declining wire will approximately equal the speed of the wire. By this arrangement the speed. of the machine may be increased to such an extent as to bring the speed of the making-wire up to the maximum velocity of Y the rapidly-moving stock and a strong, even, and well-formed sheet produced which is more uniform than usual.

Figurel shows in side elevation a sufficient portion of a Fourdrinier machine to illustrate my invention. Fig. 2 is a plan view of a detail of the machine, showing the means for adjusting the speed of the making wire.

(1 represents the usual Fourdrinier wire or paper-making wire; I), the breast-roll; c, the

lower couch-roll; d, the suction-boxes, and e the wire-guide roll.

1 The lower couch-roll serves as the drivingroll for the making-wire, and, as herein shown, it has secured to it a bevel-pinion c,

to a shaft c", bearing a belt-pulley 0, over which a belt 0'' passes, which passes over a belt-pulley c, secured to a shaft 0, bearing a cone-pulley 0 which is engaged by a cone pulley c, secured to a shaft 0 bearing a belt-pulley 0, which is connected by a belt with the driving-shaft 0 The means herein shown for driving the making-wire provide for adjusting its speed; but in lieu thereof any other suitable means may be employed.

The Fourdrinier wire has usually been arranged to move in a horizontal plane, althou h I am aware tl. at means have been rovided for adjusting the breast-roll end 0 the wire to difl'erent elevations, usually below the level, to provide for running with different grades of stock-as, for instance,with uick stock and slow stock; but so far as am aware the making-wire has always had to perform the work of drawin along the stock, and as the wiremoved T111151 the breast-roll end of the wire, which gradutablished and a smooth, even, and glassy surface presented, and not until the waving or rippling'ceased did ihe fibers lay down uniformly andproduce a Well-formed sheet of paper. sarily at a slow rate of speed to give ample time for the water to escape andfor the fibers to lay down so as to make a uniform sheet,

which is engaged by a bevel-gear 0 secured faster than the. stock the stock waved or rippled badly near;

The machinehas been run ne'ces-.

ally diminished until an equilibrium was esand in case the time was insuflicient the o creased.

breast-roll end of the wire has been lowered still larther until the desired result was accomplished. In accordance with my invention I operate entirely above the level to 5 cause the stock to travel by gravity at a velocity approximately equal to the'speed of v the making-wire, which I believe to be a new principle of operation.

The breast-roll end of the making-wire a is ID maintained at a substantial elevation above the level, so that the wire declines. The

declination of the wire is suflicient to enable the stock by gravity to move at a rapid rate of speed, which speed is substantially equal to the speed of the making-wire, so that the waves or ripples are eliminated. The makingrwire may decline continuously from end to end or from the breast-roll to the guideroll or from the breast-roll to the suctionboxes; but in practice I prefer to decline the 'making-wire from the breast-roll to the guideroll, and in such event the frame which supports the suction-boxes will be adjusted to .correspond to the declination of the making- 2 5 wire to thereby support the suction-boxes at different elevations corresponding to the declination of the wire.

The elevation above the level at which the breast-roll end of the making-wire-is main- 0 tained will vary according to the grade of stock; but in any event it will be substantial, so. as to cause the stock to move rapidly by gravity.

For the purpose of adjusting the breast-roll 3 5 end of the making-wire the bearings of the breast-roll may be adjusted by means of a screw 6, or'any other suitable means may be employed for this purpose.

For thepurpo'se of increasing the speed of 0 the machine to the maximum I maintain the breast-roll end of the making-wire at a high elevation above thelevel, so that the stock travels by gravit much faster than the mak- 5 stock, and Ithen increase the speed ofthe machine to such extent as to bring the rate of speed of the making-wire up to the speed of the rapidly-moving stock, and as a result the capacity of the machineis largely in- I find in practice that by providing .a gravity-feed operating substantially as herein described the stock runs smoothly and evenly Without waving or rippling, and the fibers are thereby permitted to settle with great uniformity as regards their distribution over the Wire, so' that the paper in addition to being well formed is very uniform. Furthermore as the stock is moving with the papermaking wire instead of being moved by the wire, or essentially by the wire, the formation of the paper will begin at the start and will continue to the end ofthe travel of the 7 stock with the wire. Furthermore, by making-wire ordinari y runs for a certain'grade of ing the sheet of paper uniform over all less sulfite or strengtheningrnaterial is required. Furthermore, as the stock carries less water when arriving at the suction boxes the amount of suction ordinarily required may be reduced, thereby reducing the friction due to the making-wire. passing over the suctionboxes, and hence increasing the life of the a wire.

Having thus described my invention, what I claim asnew, and desire to secure by Letters Patent, is

1. A Fourdrinier machine having the breast-roll end of the paper-making wire maintained at a substantial elevation above the level, whereby the stock is caused to travel by gravity, rapidly, in the direction of movement of the wire, and at-a speed approximately equal to the speed of the wire,

substantially as described.

2.. A Fourdrinier machine having the breast-roll end of the paper-making wire maintained at a high elevation, whereby the stock is caused to travel by gravity faster than the normal speed of the wire for a certain grade of stock, and having means for increasing the speed of the machine to cause the wire to travel. at substantially the same rate of speed as the rapidly-moving stock, substantially as described.

3. A Fourdrinier machine having the 5 paper-making wire declined from the breastroll to the guide-roll, the breast-roll end of the wire being maintained at a substantial elevation above the level, whereby the stock is caused to travel by gravity, rapidly, in the direction of movement of the wire and at a speed approximately equal to the speed of the wire, substantially as described.

4. In a Fourdrinier machine, a continuously-downward-moving paper-makingwire,

and means for adjusting the speed of the wire so that the wire will move at a speed'approximately equal to the velocity of the stock produced by gravity, substantially as described. I

5. In a Fourdrinier machine, a continuously downward moving, adjustably declined paper-making wire, the declination and speed of the wire being adjustable, so that the velocity produced by gravity in the 1 15 stock on the declining wi re is approximately equal to the speed of the wire, substantially as described.

6. In a 'Fourdrinier machine, a paper-mak- IIO ing wire moving continuously downward from the breast-roll to the guide-roll, whereby the stock is caused to travel by gravity in the direction of movement of the Wire, and

means for adjusting the speed of thewire so that thevelocity produced in the stock by gravity on the declining wire is approxlmately equal to the speed of the wire, substantially as described' 7. A Fourdriniermachine having the paper-making wire declined from the breast roll to the guide-rolhand the suction-boxes supported at a corresponding declination, substantially as described.

8. A Fourdrinier machine having the pa per-making wire declined from the breastroll to the guide-roll, and the several suctionboxes arranged at dillercnt elevations, substantially as described.

9. In a Fourdrinier machine, a paper-makin wire having its breast-roll end maintamed at a substantial elevation above the level whereby the stock is caused to travel by gravity in the direction of movement of the wire, means for adjusting the breastroll end of said wire to different elevations above the level, 'and means for adjusting the speed of the wire to approximately equal the velocity of the stock produced by gravity, substantially as described.

10. In a Fourdrinier machine, a papermaking wire declining from the breast-roll to the guide-roll whereby the stock is caused to travel by gravity in the direction ofmovement of the wire, means for adjusting the breast-roll end of said wire to difierent elevations above the level, and means foradjusting the speed of the wire to approximately equal the velocity of the stoc produced by gravity, substantially as described. 7

thewire, and means for adjusting the breastroll end of. said wire to difi'erentelevations above the level whereby the velocity of the stock produced by gravity a proximately equals the speed of the wire, su stantially as described.

12. In a Fourdrinier machine, a down wardly-moving paper-making wire, the declination and speed of which are so'regulated that the velocity of the stock down the declining wire. caused by gravity, is sorelated to the velocity of the wire in the. same direction, that waves and ripples on the stock are substantially avoided and the fibers depos-' ited with substantial uniformity on the. wire, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. I

' WILLIAM Eleni...

Witnesses:

B. J. Norns, CYNTHIA DOYLE. 

